You only show the earlier programs. I recall listening to this show circa 1948-49 when it was on Sundays (of all days) over the Mutual network at
5:30 p.m., right after the Shadow and right before Roy Rogers. Listeners of that era may recall that Sunday afternoon radio could be quite blood thirsty as it featured Nick Carter, Master Detective, Martin Kane, Private Eye, Yours Truly Johnny Dollar, the Shadow and later in the early evening, Sam Spade. True Detective Mysteries on radio re-enacted the cases from the magazine and usually highlighted a Wanted Dead or Alive bulletin about some criminal, similar to America's Most Wanted. His description would always include such gory details as his tatoos, scars, etc. Listeners were told not to apprehend the criminal themselves (as if we actually would) but "to notify their local law enforcement agencies." My father, a newspaper reporter for 40 years, contributed a couple of stories to the magazine